package com.fmy.jurisdiction.config.spring.pool;

import lombok.extern.slf4j.Slf4j;
import org.springframework.aop.interceptor.AsyncUncaughtExceptionHandler;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.lang.Nullable;
import org.springframework.scheduling.annotation.AsyncConfigurer;
import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;

import java.lang.reflect.Method;
import java.util.concurrent.Executor;
import java.util.concurrent.ThreadPoolExecutor;

/**
 * @author Mr.fmy
 * @version 1.0.0
 * @ClassName TaskExecutePool
 * @Description TODO 自定义线程池
 * @createTime 2019/9/16 13:00
 */
@Configuration
@Slf4j
public class TaskExecutePool implements AsyncConfigurer {

    @Nullable
    @Override
    public Executor getAsyncExecutor() {
        ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
        //核心线程池大小
        executor.setCorePoolSize(10);
        //最大线程数
        executor.setMaxPoolSize(20);
        //队列容量
        executor.setQueueCapacity(150);
        //活跃时间
        executor.setKeepAliveSeconds(50);
        //线程名字前缀
        executor.setThreadNamePrefix("Custom-Executor-");
        // setRejectedExecutionHandler：当pool已经达到max size的时候，如何处理新任务
        // CallerRunsPolicy：不在新线程中执行任务，而是由调用者所在的线程来执行
        executor.setRejectedExecutionHandler(new ThreadPoolExecutor.CallerRunsPolicy());
        executor.initialize();
        return executor;
    }

    @Nullable
    @Override
    public AsyncUncaughtExceptionHandler getAsyncUncaughtExceptionHandler() {
        return (arg0, arg1, arg2) -> {
            log.error("==========================" + arg0.getMessage() + "=======================", arg0);
            log.error("exception method:" + arg1.getName());
        };
    }
}
